F. Joseph Margraf
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View article: Assessing Fish Populations in Remote Subarctic Lakes Using Hydroacoustics
Assessing Fish Populations in Remote Subarctic Lakes Using Hydroacoustics Open
High latitudes of North America and Asia have many unstudied small lakes. The remoteness of these lakes presents a challenge to biologists who manage these systems. At Togiak National Wildlife Refuge in Alaska we evaluated the use of mobil…
View article: Food of White Perch (Morone americana) and Potential for Competition with Yellow Perch (Perca flavescens) in Lake Erie
Food of White Perch (Morone americana) and Potential for Competition with Yellow Perch (Perca flavescens) in Lake Erie Open
The white perch (Morone americana) is an east coast estuarine species that invaded Lake Erie in the 1950s, but did not increase in abundance until the mid 1970s. We studied the food of white perch in the Sandusky Bay area of western Lake E…
View article: THE AQUATIC MACROFAUNA AND WATER QUALITY OF COTTONWOOD CREEK, OKLAHOMA
THE AQUATIC MACROFAUNA AND WATER QUALITY OF COTTONWOOD CREEK, OKLAHOMA Open
electroshocker, and an Ekman dredge to collect 26 fish species and 50 macroinvertebrate taxa. The predominant fishes were gizzard shad (Dorosoma cepedianum), plains minnow (Hybognathus placitus), emerald shiner (Notropis atherinoides), red…